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Finding the Fourth Proportional to 111,687.72, 154,130.24 and 60,700.45

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Solution

The fourth proportional to 111,687.72, 154,130.24 and 60,700.45 is: 83,767.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,687.72 : 154,130.24 = 60,700.45 : x
  2. Step 2: Convert to fraction form
    111,687.72/154,130.24 = 60,700.45/x
  3. Step 3: Cross multiply
    111,687.72x = 154,130.24 × 60,700.45
  4. Step 4: Simplify right side
    111,687.72x = 9,355,774,623.11
  5. Step 5: Solve for x
    x = 9,355,774,623.11/111,687.72
  6. Step 6: Final answer
    x = 83,767.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.